q: only tracts have year names, the other data doesn’t update by census year?
q: is it possible to make layers transparent? -> properties -> display -> transparent
q: if we keep the polygons without data, can those be displayed differently? (e.g. greyed out) because that seems to tbbe the convention on thematic maps
q: is there information about the the geographic area covered by tracts? (how many sq miles is each tract?)
no. but arcgis can calculate the area of polygons
since the computers in the practice room were already pretty fast (pentium 4 3ghz, 2gb ram), i won’t see a speed improvement on my work computer, which means street display at anything bigger than a single county will be VERY slow. so if i want to do multi-county geocoding for a location query against a congressional district, maybe i should pass that through batchgeocode.com first and then do the match, since batchgeocode is fast and can handle the whole country
Yongho Kim 9:48 am on September 10, 2009 Permalink |
q: only tracts have year names, the other data doesn’t update by census year?
q: is it possible to make layers transparent? -> properties -> display -> transparent
Yongho Kim 9:56 am on September 10, 2009 Permalink |
will probably get addressed later: does data merge happen at the GIST_ID variable?
-> the FIPSSTCO
Yongho Kim 10:07 am on September 10, 2009 Permalink |
omg there’s this two humongous, nearly county sized islands south of la in the pacific ocean. scary! i had no idea! *giggles*
Yongho Kim 11:49 am on September 10, 2009 Permalink |
tip: for lower ver compatibility, use 10 char or less, not spaces nor funny char. just alphabet and underscore
Yongho Kim 1:15 pm on September 10, 2009 Permalink |
q: if we keep the polygons without data, can those be displayed differently? (e.g. greyed out) because that seems to tbbe the convention on thematic maps
Yongho Kim 1:33 pm on September 10, 2009 Permalink |
method: quantile N/4, natural breaks (discovers patterns), baseline: use mean as bottom level, then do manual.
q: can baseline be mixed with other methods? (quantile/natural)?
no
q: could the data join process be kept without saving a new file?
no (but it seems to refresh data every time the arcmap project file is opened)
Yongho Kim 2:00 pm on September 10, 2009 Permalink |
q: is there information about the the geographic area covered by tracts? (how many sq miles is each tract?)
no. but arcgis can calculate the area of polygons
Yongho Kim 3:31 pm on September 10, 2009 Permalink |
q: is it possible to export the no-matches to do further analysis? (edit in excel, etc)
-> yes
q: street relevancy?
-> the info is coded as “primary”, “residential”, which can be isolated
Yongho Kim 6:27 am on September 11, 2009 Permalink |
since the computers in the practice room were already pretty fast (pentium 4 3ghz, 2gb ram), i won’t see a speed improvement on my work computer, which means street display at anything bigger than a single county will be VERY slow. so if i want to do multi-county geocoding for a location query against a congressional district, maybe i should pass that through batchgeocode.com first and then do the match, since batchgeocode is fast and can handle the whole country